Blender to Substance Painter HP-LP Bake Issues

Hello,

I am trying to bake my HP to my LP to save verts for a game sword asset. I am using the subsurface modifier and there is an issue.

As you can see due to the modifier for the HP version there is a gap between the mesh and the edge. Now when I bake the HP to the LP in SP I get this because of this gap...

I am using a cage as well which I thought was supposed to fix this but does not work. How am I supposed to fix this issues and make sure everything looks clean?